[lmm]

Read Matt Levine's column on Bloomberg. All of them, and the ones from when he worked for Dealbreaker as well. He tells the stories in a clear way that makes sense, cutting through a lot of nonsense, and so you understand the key points even without getting the jargon, and then you gradually pick up the jargon too.

[eru]

Matt Levine's column is great. The Economist can also bring similar-ish knowledge, but its focus is broader.